Edward Snowden made an apperance at CES 2016 by using a screen-on-wheels robot.

You might've missed him, but Edward Snowden was at the Consumer Electronics Show-virtually, through a robot screen, that is.

The National Security Agency whistleblower made a casual appearance in Las Vegas during Suitable Technologies' show case. Snowden was using one of Suitable's Beams to communicate and interact with the audience.

The Beam is basically a screen-on-wheels that can be used remotely to communicate and hold virtual meetings. Just imagine a tablet-sized screen glued on a stick on wheels.

Snowden said he was speaking at Suitable's booth to show how the Beam was more than just another piece of office technology; he was there to prove that the Beam can also be used to subvert governments.

"This is the power of Beam, or more broadly the power of technology," Snowden said. "The FBI can't arrest a robot."

Snowden's lawyer, Ben Wizner, told The Guardian via email, that his client wasn't compensated for the event, but he was there to make a point and show "he has benefited from the technology."

The former government employee also commented on other technology being showcased at CES. He said a lot of innovations, such as VR and AI systems, seem promising if companies take privacy and security into consideration.

"What if you could commute to work without having to sit in traffic?" Snowden asked. "The U.S. government basically cancelled my passport, but I'm sitting here in Las Vegas with you guys at CES."